PT-2026-26956 · Gnome · Libsoup

Published 2026-01-01 · Updated 2026-03-26 · CVE-2026-2436

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Name of the Vulnerable Software and Affected Versions libsoup (affected versions not specified)

Description A use-after-free issue exists in libsoup's SoupServer. Specifically, the soup server disconnect() function can free connection objects before a TLS handshake is finished. If the handshake completes after the object is freed, a dangling pointer is accessed, potentially causing a server crash and resulting in a Denial of Service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-825

Related Identifiers

CVE-2026-2436

ECHO-DEFE-1984-CAB6

Affected Products

Libsoup

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-2436 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-2436 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-2436 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-2436 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-2436 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-2436 · Security Note
• https://gitlab.gnome.org/GNOME/libsoup/-/issues/501 · Vendor Advisory
• https://twitter.com/CVEnew/status/2037280576496165111 · Twitter Post
• https://bugzilla.redhat.com/show_bug.cgi?id=2442909 · Note
• https://access.redhat.com/security/cve/CVE-2026-2436 · Note